CN201282460Y - Novel Ku frequency-channel satellite receiving tuner - Google Patents
Novel Ku frequency-channel satellite receiving tuner Download PDFInfo
- Publication number
- CN201282460Y CN201282460Y CNU2008202019962U CN200820201996U CN201282460Y CN 201282460 Y CN201282460 Y CN 201282460Y CN U2008202019962 U CNU2008202019962 U CN U2008202019962U CN 200820201996 U CN200820201996 U CN 200820201996U CN 201282460 Y CN201282460 Y CN 201282460Y
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Abstract
The utility model relates to a novel receiving tuner of a Ku frequency band satellite, aims to solve the problems of oversize, redundant parts and difficult wiring of the prior receiving tuner of a Ku frequency band satellite.The utility model comprises a feed source and circuit components of a tuner, wherein, the circuit components of the tuner comprises a low-noise broadband amplifier, an image rejection band-pass filter, a double local oscillation oscillator, a power divider, a balanced mixer, an intermediate frequency amplifier, a three terminal regulator and a control circuit; and further comprises an integrative IC which comprises the double local oscillation oscillator, the power divider and the balanced mixer; and other parts of the circuit components of the tuner are formed by the peripheral circuit of the integrative IC. The utility model has the advantages of high power gain; low noise; good phase noise index; high reliability; simple structure; less parts; small size; and lower cost; can be used in various environments such as a household, industrial and mining enterprises, and the like, and particularly meet the requirements of the 'village-to-village connection and family-to-family connection' project of satellite televisions.
Description
Technical field
The utility model belongs to satellite broadcasting television and satellite communication technology field, relates in particular to a kind of novel Ku frequency range satellite and receives tuner.
Background technology
On July 31st, 2002 was announced, notification number is that the Chinese utility model patent of CN2503672Y discloses a kind of Ku frequency range satellite reception tuner { tuner claims frequency demultiplier (LBN) again }.It is made of feed and high frequency tuner circuit assembly, the high frequency tuner circuit assembly is by low-noise wide-band amplifier, mirror image inhibition zone bandpass filter, two local oscillator oscillators, the annular power divider, balanced mixer, intermediate frequency amplifier, three terminal regulator and control circuit are formed, first from the radiofrequency signal of satellite repeater by after the low-noise wide-band amplifier amplification, after disturbing by mirror image inhibition zone bandpass filter filtering mirror image again, deliver to annular power divider, the annular power divider is with this signal with from the local oscillation signal of two local oscillator oscillators, give balanced mixer after dividing equally, the intermediate-freuqncy signal of being sent by balanced mixer is exported by the F head after intermediate frequency amplifier amplifies again.
This device has power gain height, noise is low, the phase noise index is good, reliability is high advantage, but shortcomings such as volume is excessive, part is many, difficult wiring are also arranged.
The utility model content
The technical problems to be solved in the utility model is the above-mentioned defective that how to overcome prior art, provides a kind of novel Ku frequency range satellite to receive tuner.
For solving the problems of the technologies described above, this novel Ku frequency range satellite receives tuner and comprises feed and high frequency tuner circuit assembly, and wherein the high frequency tuner circuit assembly comprises low-noise wide-band amplifier, mirror image inhibition zone bandpass filter, two local oscillator oscillator, power divider, balanced mixer, intermediate frequency amplifier, three terminal regulator and control circuit.The high frequency tuner circuit assembly also comprises integrated IC, and described pair of local oscillator oscillator, power divider, balanced mixer promptly come from this integrated IC, and the remainder of high frequency tuner circuit assembly is made of the peripheral circuit of this integrated IC.
So design can reduce parts, be convenient to assembling, and small and exquisite attractive in appearance.
As optimization, described integrated IC is the TFF1004HN chip, and the 16th pin of this chip has additional intermediate frequency amplifier.
The former designing gain of this TFF1004HN chip amplifies Min26dB, Typ32dB, Max35dB, and actual gain is enlarged into Typ30dB, increases a 8dB intermediate frequency amplifier, can compensate the IC gain and amplify low deficiency.
As optimization, increase by 1～1.8K Ω resistance on the 7th pin of described TFF1004HN chip to ground.
Former design the 7th pin of described TFF1004HN chip is the switch of control H/Low Band circuit.IC Hi Band is moving when supplying with the 7th pin dc voltage 3V does; IC Low Band action when not powering.Actual conditions are: the 7th pin still has electricity when not powering at work, can't control Hi/Low Band and switch.
So design increases by 1～1.8K Ω 1oad resistance to ground on 7Pin, when not powering at work, the 7th pin no-voltage exists; The 7th pin still has dc voltage 3V when needing power supply, thereby guarantees that the 7th pin can accurately control Hi/Low Band and switch.
As optimization, the external 50MHz quartz oscillator of described TFF1004HN chip the 6th pin increases a 10pF electric capacity to ground on the one pin, and its another pin connects a 0R resistance to ground.(note: 0R resistance does not represent that resistance is zero resistance, and is meant that resistance is less than certain numerical value---the resistance of 50m Ω can be called 0R resistance)
Former design the 6th pin of TFF1004HN chip needs an external 50MHz quartz oscillator, produce a frequency of oscillation and give the TFF1004HN chip, can there be Hi/Low Band frequency of oscillation to produce, in fact, an only external 50MHz quartz oscillator is when ageing test-30 ℃～+ 80 ℃, still there is not Hi/Low Band frequency of oscillation, the TFF1004HN chip can't operate as normal, and normal temperature+25 ℃ also can't operate as normal sometimes, the phase noise index error.
Like this design, improved the TFF1004HN chip in normal temperature+25 ℃ with the reliability and the stability of ageing test-30 ℃～+ 80 ℃, the while has also been improved the phase noise index of IC.
As optimization, the 21st pin of this integrated IC, the 16th pin increase a Chip-R respectively, make its impedance matching become 50 Ω, increase filter capacitor on the relevant position of its peripheral circuit.So design through filtering, has solved Hi/Low Band smear, mixing imbalance, the problem that noise is high.
The Ku frequency range tuner that the utility model provides is the frequency demultiplier of a kind of bipolarity, two local oscillator (9.75GHZ and 10.6GHZ), it and parabolic antenna and satellite television receiver are combined, constitute the satellite television earth receiving station, can directly receive the analog or digital TV signal that geostationary satellite Ku band transponder is sent.This frequency demultiplier has adopted current state-of-the art ultra-low noise, the special-purpose local oscillation of high-gain field effect transistor and frequency demultiplier, balanced mixing, intermediate frequency amplifies, crystal offsetting and control integrated circuit, therefore, this frequency demultiplier power gain height, noise is low, the phase noise index is good, reliability is high, and have simple in structure, part reduces, volume-diminished, the advantage that cost reduces, can satisfy multiple environment such as family, industrial enterprise and use, be particularly suitable for the needs of satellite television " the village village is logical, logical in every family " engineering.
Description of drawings
Below in conjunction with accompanying drawing this novel Ku frequency range satellite being received tuner is described further:
Fig. 1 is the functional-block diagram that this novel Ku frequency range satellite receives tuner;
Fig. 2 is the circuit diagram that this novel Ku frequency range satellite receives the execution mode one of tuner;
Fig. 3 is the circuit diagram that this novel Ku frequency range satellite receives the execution mode two of tuner.
Embodiment
Execution mode one: as shown in Figure 1, 2, this novel Ku frequency range satellite receives tuner to be made up of feed and high frequency tuner circuit assembly, and wherein the high frequency tuner circuit assembly comprises low-noise wide-band amplifier, mirror image inhibition zone bandpass filter, two local oscillator oscillator, power divider, balanced mixer, intermediate frequency amplifier, three terminal regulator and control circuit.The high frequency tuner circuit assembly also comprises integrated IC, and described pair of local oscillator oscillator, power divider, balanced mixer promptly come from this integrated IC, and the remainder of high frequency tuner circuit assembly is made of the peripheral circuit of this integrated IC.
Execution mode two: shown in Fig. 1,3: as described in integrated IC be the TFF1004HN chip, the 16th pin of this chip has additional the intermediate frequency amplifier of a 8db, see Fig. 3 get the bid " 1 " locate.
Increase by 1～1.8K Ω resistance on the 7th pin of described TFF1004HN chip to ground, see Fig. 3 get the bid " 2 " locate.
The external 50MHz quartz oscillator of described TFF1004HN chip the 6th pin increases a 10pF electric capacity to ground on the one pin; Its another pin connect a 0R resistance to ground, see Fig. 3 get the bid " 3 " locate.
Increase filter capacitor on the relevant position of the peripheral circuit of this integrated IC, see Fig. 3 get the bid " 5 " locate; Its input (i.e. the 21st pin) and output (i.e. the 16th pin) increase Chip-R, make its impedance matching become 50 Ω, see Fig. 3 get the bid " 4 " locate.All the other structures are as described in the enforcement mode one.
Claims (5)
1, a kind of novel Ku frequency range satellite receives tuner, comprise feed and high frequency tuner circuit assembly, wherein the high frequency tuner circuit assembly comprises low-noise wide-band amplifier, mirror image inhibition zone bandpass filter, two local oscillator oscillator, power divider, balanced mixer, intermediate frequency amplifier, three terminal regulator and control circuit, it is characterized in that: the high frequency tuner circuit assembly also comprises integrated IC, described pair of local oscillator oscillator, power divider, balanced mixer promptly come from this integrated IC, and the remainder of high frequency tuner circuit assembly is made of the peripheral circuit of this integrated IC.
2, novel Ku frequency range satellite according to claim 1 receives tuner, and it is characterized in that: described integrated IC is the TFF1004HN chip, and the 16th pin of this chip has additional intermediate frequency amplifier.
3, novel Ku frequency range satellite according to claim 2 receives tuner, it is characterized in that: increase by 1～1.8K Ω resistance on the 7th pin of described TFF1004HN chip to ground.
4, novel Ku frequency range satellite according to claim 3 receives tuner, it is characterized in that: the external 50MHz quartz oscillator of described TFF1004HN chip the 6th pin, increase a 10pF electric capacity on the one pin to ground, its another pin connects a 0R resistance to ground.
5, novel Ku frequency range satellite according to claim 4 receives tuner, it is characterized in that: the 21st pin of this integrated IC, the 16th pin increase a Chip-R respectively, make its impedance matching become 50 Ω, increase filter capacitor on the relevant position of its peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202019962U CN201282460Y (en) | 2008-10-17 | 2008-10-17 | Novel Ku frequency-channel satellite receiving tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202019962U CN201282460Y (en) | 2008-10-17 | 2008-10-17 | Novel Ku frequency-channel satellite receiving tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282460Y true CN201282460Y (en) | 2009-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202019962U Expired - Fee Related CN201282460Y (en) | 2008-10-17 | 2008-10-17 | Novel Ku frequency-channel satellite receiving tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282460Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105657300A (en) * | 2016-03-18 | 2016-06-08 | 珠海迈科智能科技股份有限公司 | Satellite tuner circuit and satellite tuner |
-
2008
- 2008-10-17 CN CNU2008202019962U patent/CN201282460Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105657300A (en) * | 2016-03-18 | 2016-06-08 | 珠海迈科智能科技股份有限公司 | Satellite tuner circuit and satellite tuner |
| CN105657300B (en) * | 2016-03-18 | 2019-05-07 | 珠海迈科智能科技股份有限公司 | A kind of satellite low noise block circuit and satellite low noise block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Su Renkuan Inventor after: Zhang Ning Inventor before: Hong Congjin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HONG CONGJIN TO: SU RENKUAN; ZHANG NING |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20171017 |